Caloosahatchee and Okeechobee Conditions Report

Purpose
USACE Data Summary
Lake Okeechobee
Caloosahatchee River Estuary
Charlotte Harbor
- Discharge

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Updated: 2021-10-22 08:14:00 EDT

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Updated: 2021-10-22 11:46 UTC

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Purpose

This webpage/report is intended to aggregate information from different agencies (i.e. USACE, SFWMD, FWC, USGS and NOAA) into one spot to help inform local government agencies and stakeholders on conditions within Lake Okeechobee, the Caloosahatchee River and Estuary and Coastal southwest Florida. The data provided here should be considered preliminary and are subject to change.

USACE Data Summary

Daily discharge volume in Acre-Feet per day for the last 14-days. Data Source: USACE
10-21	365	0	1345	71	0	288	198	-34	0	29	5399	34	637	1755	5,706.443
10-20	135	20	1440	76	0	355	216	-14	0	40	5944	345	861	1648	4,486.609
10-19	0	117	1046	25	0	236	478	-95	0	149	5814	639	914	831	3,695.205
10-18	0	595	2928	2	0	268	514	-254	0	461	5958	960	1573	2073	3,713.056
10-17	0	676	2945	181	0	0	0	-379	0	494	6006	1321	2073	2158	3,722.973
10-16	0	18	2723	213	0	0	0	-468	0	475	6474	1446	2826	2160	3,633.717
10-15	0	426	2469	6	0	0	0	-768	0	337	6549	1966	2598	2815	3,328.263
10-14	0	1260	5508	3	0	0	0	-966	0	37	6837	2725	3366	3392	4,323.965
10-13	0	1292	4383	4	0	0	0	-952	0	450	7166	2584	3987	3082	4,270.411
10-12	0	1196	7980	8	0	0	0	-1016	0	1057	7345	2769	3382	2539	4,520.328
10-11	0	1340	5737	5	0	0	0	-1047	0	951	7688	2158	1892	2884
10-10	0	2165	7805	8	0	0	0	-994	0	1408	7400	1567	547	3705
10-09	0	1126	6032	94	0	0	0	-422	0	1749	7137	230	300	2291	4,482.642
1 Includes discharges from Fisheating Creek, S71, S72, S84, S84X, S65E, and S65EX1
2 Estimated as S12s+(S333+S333N)-S356. If no data is present (i.e. -NR-) either S12s, S333s or S356 data is not available.

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Average and total net discharge volume in Acre-Feet per day for the last 7-days. Data Source: USACE
Average	71	265	2128	82	0	164	201	-287	0	284	6021	959	1640	1920	4,040.895
Total	500	1852	14896	574	0	1146	1406	-2011	0	1985	42145	6710	11482	13440	28,286.266

Average and total net discharge volume in Acre-Feet per day for the last 14-days. Data Source: USACE
Average	38	787	4026	54	0	88	108	-570	0	587	6594	1442	1920	2410	4,171.237
Total	500	10231	52341	696	0	1146	1406	-7408	0	7637	85718	18744	24956	31333	45,883.612

Lake Flows: In the past 7 days the total outflow from Lake Okeechobee was 3,627 AF with 500 AF to the Caloosahatchee through S-77, 574 AF through S-310 in Clewiston, and 2,553 AF to the EAA through S-351, S-352, and S-354. The total net inflow to the Lake was 44,156 AF (42,145 AF from Fisheating Creek, S-71, S-72,S-84s, S-65EX, and S-65EX1) with a total backflow volume of 2,011 AF from C10A. Water conservation areas received flows of 6,710 AF, 11,482 AF, and 13,440 AF at WCA1, WCA2, and WCA3, respectively. Everglades National Park received 28,286 AF.

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Lake Flows: In the past 7 days the total outflow from Lake Okeechobee was 3,627 AF with 500 AF to the Caloosahatchee through S-77, 574 AF through S-310 in Clewiston, and 2,553 AF to the EAA through S-351, S-352, and S-354. The total net inflow to the Lake was 42,611 AF (40,600 AF from Fisheating Creek, S-71, S-72,S-84s, S-65EX, and S-65EX1) with a total backflow volume of 2,011 AF from C10A. Water conservation areas received flows of 5,028 AF, 9,299 AF, and 12,347 AF at WCA1, WCA2, and WCA3, respectively. Everglades National Park received 30,387 AF.

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Lake Okeechobee Level: -NR- ft (Water Shortage Management Band)

Lake Okeechobee Inflow: 2954 cfs

Last Week: 15.86 ft

Lake Okeechobee Outflow: 355 cfs

Weekly Rainfall Total:

WP Franklin ≥ 0.00"

Ortona ≥ 0.00"

Moore Haven ≥ 0.00"

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Lake Okeechobee

Stage Elevation

Lake Okeechobee daily average stage elevation for water year 2022 (WY2022) relative to the last two water years (red line) relative to the Lake Okeechobee Regulation Schedule (LORS) . Data are provisional and subject to change.

Stage and recession rates this time for the current and last three water years
10-21	2019	14.03	-0.21	-0.67
10-21	2020	13.50	0.03	-0.26
10-21	2021	16.28	0.08	1.09
10-21	2022	15.83 A	-0.03	0.72
A Value estimated from average stage height across L001, L005, L006, LZ40, S133TW, S352HW & S4TW
B -0.5 ft 30-d⁻¹ maximum 30-day Recession Rate for HAB Deviation

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As of 10/21/2021 the mean stage elevation in Lake Okeechobee is within the Operational Low Sub- Management Band at a stage elevation of 15.83 feet (NGVD29).

Lake Okeechobee 7-day and 30-day water level recession/ascension rates during WY2022. Negative values indicate falling water levels (recession) and positive values indicate raising water level (ascension) during this 7-day period . Data are provisional and subject to change.

Regional Rainfall

Weekly (10/15 - 10/21) rainfall totals along the Caloosahatchee River
S79 (WP Franklin)	0.0
S78 (Ortona)	0.0
S77 (Moore Haven)	0.0
1 Data Source: SFWMD DBHYDRO (DBKEYS 16414,15495,16415) and USACE reports
2 Based on data from 10/15/2021 - 10/21/2021

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Relative Algae Condition

Sonde monitoring locations within Lake Okeechobee conducted by SFWMD.

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>>>>>>> 1bcc9afc9cc2c346013ff8b4c99b002005671fe3 Daily Chlorophyll, Phycocyanin,relative ratio of Phycocyanin (Phyco) relative to Phyco and Chlorophyll (Chl) and Turbidity within Lake Okeechobee monitored by SFWMD. Chlorophyll and Phycocyanin are plotted on log-scale. Thresholds of concern/risk identified for Chlorophyll (20 and 40 μg/L) and Phycocyanin (40 μg/L; Cotterill et al 2019 & Macário et al 2015). Data are provisional and subject to change.

Cotterill et al (2019) Phycocyanin sensors as an early warning system for cyanobacteria blooms concentrations: a case study in the Rotorua lakes. New Zealand Journal of Marine and Freshwater Research 53:555–570.
Macário et al (2015) New insights towards the establishment of phycocyanin concentration thresholds considering species-specific variability of bloom-forming cyanobacteria. Hydrobiologia 757:155–165.

Weekly mean water quality sonde Chlorophyll and Phycocyanin concentration at monitoring locations across Lake Okeechobee
L001	41	115	High Concern	High Concern
L005	21	56	Warning	High Concern
L006	37	122	Warning	High Concern
LZ40	832	113	High Concern	High Concern
POLESOUT1	73	88	High Concern	High Concern
POLESOUT3	44	43	High Concern	High Concern
1 Based on data from 10/16/2021 - 10/22/2021
2 Chlorophyll Categories: Min. Concern: values < 20 μg L⁻¹ Warning: values ≥ 20μg L⁻¹ and <40 μg L⁻¹ High Concern: values ≥ 40 μg L⁻¹
3 Phycocyanin Categories: Min. Concern: values < 40 μg L⁻¹ High Concern: values ≥ 40 μg L⁻¹

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Cyanobacteria Index for Lake Okeechobee for 2021-10-21 (Data Source: NOAA NCCOS)

Blue-Green Algae Sampling Results

<<<<<<< HEAD ======= >>>>>>> 1bcc9afc9cc2c346013ff8b4c99b002005671fe3 Blue-green Algae sampling results for the last 30-days for the 10 county area (Lee, Collier, Hendry, Glades, Okeechobee, Martin, Palm Beach, Broward, Miami-Dade and Monroe). Data from FDEP Blue-green algae dashboard Data are provisional and subject to change.

Of the 97 samples collected, cyanobacteria was dominate in 34 samples, 31 samples had toxins present ranging from 0.28 to 44 μg L⁻¹ (does not include non-detects).

Caloosahatchee River Estuary

Discharge

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>>>>>>> 1bcc9afc9cc2c346013ff8b4c99b002005671fe3 Fort Myers Yacht Basin salinity (SCCF-RECON) and S79 discharge (SFWMD) data for the last six months. Data are provisional and subject to change.

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>>>>>>> 1bcc9afc9cc2c346013ff8b4c99b002005671fe3 Fort Myers Yacht Basin salinity (SCCF-RECON) and S79 discharge (SFWMD) data for the last last 30 days. Data are provisional and subject to change.

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>>>>>>> 1bcc9afc9cc2c346013ff8b4c99b002005671fe3 S-77 (from Lake Okeechobee) and S-79 (to Tidal Basin) flow data along the C-43 and Caloosahatchee River. C-43 Basin Flow was calculated as the difference from S-77 and S-79. Data are provisional and subject to change.

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>>>>>>> 1bcc9afc9cc2c346013ff8b4c99b002005671fe3 Daily, 14-day moving average and 30-day moving average discharge for S-79 relative to the Northern Estuaries RECOVER performance measure and the established minimium flows and levels (MFLs) for the recent 30-day period. Data are provisional and subject to change.

As of Oct 21, discharges conditions are within the optimum RECOVER salinity envelope.

Cumulative discharge for S-79 (to Tidal Basin) and S-77 (from Lake Okeechobee) for the last three Florida Water Years (May - April). Day of water year is analogous to day of year with Day 1 = May 1^st. Data are provisional and subject to change.

Chlorophyll, Phycocyanin & fDOM

Top: Daily dissolved organic matter (fluorescence DOM). Middle: Daily relative fluorescence Chlorophyll and Phycocyanin observed at the floating sensor bouy at S-79 monitoring by USGS. Bottom: The relative ratio of Phycocyanin (Phyco) relative to Phyco and Chlorophyll (Chl). Data are provisional and subject to change.

Estuary Salinity

Daily average bottom salinity data for the last 14-days from sampling locations within the tidal Caloosahatchee River Estuary relative to oyster health (Sanibel, Shell Point and Cape Coral) and tape grass (Vallisneria americana) health (Ft. Myers only) conditions. Data are provisional and subject to change.

Red Tide

<<<<<<< HEAD ======= >>>>>>> 1bcc9afc9cc2c346013ff8b4c99b002005671fe3 Red tide sampling results for the last 30-days from just south of Tampa Bay to the Florida Keys. Data from NOAA HABSOS Program Data are provisional and subject to change.

Count of samples within each abundance category within the greater Caloosahatchee River Estuary (see grey box on map)
not present/background (0-1,000)	94
very low (>1,000-10,000)	5
low (>10,000-100,000)	2
medium (>100,000-1,000,000)	---
high (>1,000,000)	---

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Chlorophyll fluorescence for coastal southwest Florida for 2021-10-21 (Data Source: NOAA NCCOS)

Charlotte Harbor

Discharge

<<<<<<< HEAD ======= >>>>>>> 1bcc9afc9cc2c346013ff8b4c99b002005671fe3 USGS discharge monitoring locations for rivers and creeks entering Charlotte Harbor

Daily discharge into Charlotte Harbor from major rivers and creeks. Data source: USGS. Grey dashed lines between points indicate a potential data gap with values linearly interpolated. Data are provisional and subject to change.

Daily and 7-day moving mean discharge to Charlotte Harbor
10-21	02296750	Peace River	656.5	794.8
02297100	Joshua Creek	45.0	57.7
02298202	Shell Creek	277.7	343.4
02298880	Myakka River	366.9	429.6
02299472	Big Slough	53.6	74.4

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Version History

Daily discharge volume in Acre-Feet per day for the last 14-days. Data Source: USACE
Date	S77	S78	S79	S310	S351	S352	S354	L8	S308	S80	NthLake 1	WCA1	WCA2	WCA3	ENP 2
10-21	365	0	1345	71	0	288	198	-34	0	29	5399	34	637	1755	5,706.443
10-20	135	20	1440	76	0	355	216	-14	0	40	5944	345	861	1648	4,486.609
10-19	0	117	1046	25	0	236	478	-95	0	149	5814	639	914	831	3,695.205
10-18	0	595	2928	2	0	268	514	-254	0	461	5958	960	1573	2073	3,713.056
10-17	0	676	2945	181	0	0	0	-379	0	494	6006	1321	2073	2158	3,722.973
10-16	0	18	2723	213	0	0	0	-468	0	475	6474	1446	2826	2160	3,633.717
10-15	0	426	2469	6	0	0	0	-768	0	337	6549	1966	2598	2815	3,328.263
10-14	0	1260	5508	3	0	0	0	-966	0	37	6837	2725	3366	3392	4,323.965
10-13	0	1292	4383	4	0	0	0	-952	0	450	7166	2584	3987	3082	4,270.411
10-12	0	1196	7980	8	0	0	0	-1016	0	1057	7345	2769	3382	2539	4,520.328
10-11	0	1340	5737	5	0	0	0	-1047	0	951	7688	2158	1892	2884
10-10	0	2165	7805	8	0	0	0	-994	0	1408	7400	1567	547	3705
10-09	0	1126	6032	94	0	0	0	-422	0	1749	7137	230	300	2291	4,482.642
1 Includes discharges from Fisheating Creek, S71, S72, S84, S84X, S65E, and S65EX1
2 Estimated as S12s+(S333+S333N)-S356. If no data is present (i.e. -NR-) either S12s, S333s or S356 data is not available.

Average and total net discharge volume in Acre-Feet per day for the last 7-days. Data Source: USACE
Statistic	S77	S78	S79	S310	S351	S352	S354	L8	S308	S80	NthLake	WCA1	WCA2	WCA3	ENP
Average	71	265	2128	82	0	164	201	-287	0	284	6021	959	1640	1920	4,040.895
Total	500	1852	14896	574	0	1146	1406	-2011	0	1985	42145	6710	11482	13440	28,286.266

Stage and recession rates this time for the current and last three water years
Date (Month-Day)	Water Year	Stage (ft, NGVD29)	7-Day Recession Rate (ft 7-d⁻¹)	30-Day Recession Rate (ft 30-d⁻¹) B
10-21	2019	14.03	-0.21	-0.67
10-21	2020	13.50	0.03	-0.26
10-21	2021	16.28	0.08	1.09
10-21	2022	15.83 A	-0.03	0.72
A Value estimated from average stage height across L001, L005, L006, LZ40, S133TW, S352HW & S4TW
B -0.5 ft 30-d⁻¹ maximum 30-day Recession Rate for HAB Deviation

Weekly (10/15 - 10/21) rainfall totals along the Caloosahatchee River
Mointoring Location 1	Weekly Rainfall Total (inches) 2
S79 (WP Franklin)	0.0
S78 (Ortona)	0.0
S77 (Moore Haven)	0.0
1 Data Source: SFWMD DBHYDRO (DBKEYS 16414,15495,16415) and USACE reports
2 Based on data from 10/15/2021 - 10/21/2021

Weekly mean water quality sonde Chlorophyll and Phycocyanin concentration at monitoring locations across Lake Okeechobee
Site	7-day Mean Chlorophyll Conc. (μg L⁻¹) 1	7-day Mean Phycocyanin Conc. (μg L⁻¹) 1	Green Algal Concern Category 2	Blue-green Algae Concern Category 3
L001	41	115	High Concern	High Concern
L005	21	56	Warning	High Concern
L006	37	122	Warning	High Concern
LZ40	832	113	High Concern	High Concern
POLESOUT1	73	88	High Concern	High Concern
POLESOUT3	44	43	High Concern	High Concern
1 Based on data from 10/16/2021 - 10/22/2021
2 Chlorophyll Categories: Min. Concern: values < 20 μg L⁻¹ Warning: values ≥ 20μg L⁻¹ and <40 μg L⁻¹ High Concern: values ≥ 40 μg L⁻¹
3 Phycocyanin Categories: Min. Concern: values < 40 μg L⁻¹ High Concern: values ≥ 40 μg L⁻¹

Count of samples within each abundance category within the greater Caloosahatchee River Estuary (see grey box on map)
Cell Abundance (Cells L⁻¹)	Number of Samples
not present/background (0-1,000)	94
very low (>1,000-10,000)	5
low (>10,000-100,000)	2
medium (>100,000-1,000,000)	---
high (>1,000,000)	---

Daily and 7-day moving mean discharge to Charlotte Harbor
Date	USGS Site ID	Site Name	Daily Discharge (Ac-Ft d⁻¹)	Mean 7-d Discharge (Ac-Ft d⁻¹)
10-21	02296750	Peace River	656.5	794.8
	02297100	Joshua Creek	45.0	57.7
	02298202	Shell Creek	277.7	343.4
	02298880	Myakka River	366.9	429.6
	02299472	Big Slough	53.6	74.4